18305268 has 24 divisors (see below), whose sum is σ = 42874272. Its totient is φ = 6078624.

The previous prime is 18305257. The next prime is 18305279. The reversal of 18305268 is 86250381.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18305257) and next prime (18305279).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 571 + ... + 6077.

It is an arithmetic number, because the mean of its divisors is an integer number (1786428).

Almost surely, 2^18305268 is an apocalyptic number.

It is an amenable number.

18305268 is an abundant number, since it is smaller than the sum of its proper divisors (24569004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18305268 is a wasteful number, since it uses less digits than its factorization.

18305268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5791 (or 5789 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 18305268 is about 4278.4656128103. The cubic root of 18305268 is about 263.5473764022.

The spelling of 18305268 in words is "eighteen million, three hundred five thousand, two hundred sixty-eight".